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Thread: Whats the stock wrist pin size for a 83-85 atc 125m.?

  1. #1
    Join Date
    Feb 2010
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    Visalia, CA
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    Whats the stock wrist pin size for a 83-85 atc 125m.?

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  2. #2
    swifty's Avatar
    swifty is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    May 2010
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    sabula iowa
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    381
    99% sure its 15mm as we had a 110 motor that used a stock 125m piston for a hillbilly +4mm big bore and 110 has 15mm pin
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